runtime_capabilities/fidl/
data_router.rs

1// Copyright 2024 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::fidl::router;
6use crate::{ConversionError, Data, Router, RouterResponse, WeakInstanceToken};
7use fidl::AsHandleRef;
8use fidl_fuchsia_component_sandbox as fsandbox;
9use fidl_fuchsia_io as fio;
10use futures::TryStreamExt;
11use std::sync::Arc;
12use vfs::directory::entry::DirectoryEntry;
13use vfs::execution_scope::ExecutionScope;
14
15impl crate::RemotableCapability for Router<Data> {
16    fn try_into_directory_entry(
17        self,
18        scope: ExecutionScope,
19        token: WeakInstanceToken,
20    ) -> Result<Arc<dyn DirectoryEntry>, ConversionError> {
21        Ok(self.into_directory_entry(fio::DirentType::Service, scope, token))
22    }
23}
24
25impl TryFrom<RouterResponse<Data>> for fsandbox::DataRouterRouteResponse {
26    type Error = fsandbox::RouterError;
27
28    fn try_from(resp: RouterResponse<Data>) -> Result<Self, Self::Error> {
29        match resp {
30            RouterResponse::<Data>::Capability(c) => {
31                Ok(fsandbox::DataRouterRouteResponse::Data(c.into()))
32            }
33            RouterResponse::<Data>::Unavailable => {
34                Ok(fsandbox::DataRouterRouteResponse::Unavailable(fsandbox::Unit {}))
35            }
36            RouterResponse::<Data>::Debug(_) => Err(fsandbox::RouterError::NotSupported),
37        }
38    }
39}
40
41impl crate::fidl::IntoFsandboxCapability for Router<Data> {
42    fn into_fsandbox_capability(self, token: WeakInstanceToken) -> fsandbox::Capability {
43        let (client_end, sender_stream) =
44            fidl::endpoints::create_request_stream::<fsandbox::DataRouterMarker>();
45        self.serve_and_register(sender_stream, client_end.as_handle_ref().koid().unwrap(), token);
46        fsandbox::Capability::DataRouter(client_end)
47    }
48}
49
50impl Router<Data> {
51    async fn serve_router(
52        self,
53        mut stream: fsandbox::DataRouterRequestStream,
54        token: WeakInstanceToken,
55    ) -> Result<(), fidl::Error> {
56        while let Ok(Some(request)) = stream.try_next().await {
57            match request {
58                fsandbox::DataRouterRequest::Route { payload, responder } => {
59                    responder.send(router::route_from_fidl(&self, payload, token.clone()).await)?;
60                }
61                fsandbox::DataRouterRequest::_UnknownMethod { ordinal, .. } => {
62                    log::warn!(ordinal:%; "Received unknown DataRouter request");
63                }
64            }
65        }
66        Ok(())
67    }
68
69    /// Serves the `fuchsia.sandbox.Router` protocol and moves ourself into the registry.
70    pub fn serve_and_register(
71        self,
72        stream: fsandbox::DataRouterRequestStream,
73        koid: zx::Koid,
74        token: WeakInstanceToken,
75    ) {
76        let router = self.clone();
77
78        // Move this capability into the registry.
79        crate::fidl::registry::insert(self.into(), koid, async move {
80            router.serve_router(stream, token).await.expect("failed to serve Router");
81        });
82    }
83}
runtime_capabilities/fidl/data_router.rs

runtime_capabilities/fidl/
data_router.rs
